Granted Patent
Utility
US 5,540,233 · App. 08/327,990
Method for determining the functional residual capacity of lungs and a ventilator for practicing said method
Inventors:
Anders Larsson, Rolf Castor, Stefan Brauer, Sven-Gunnar Olsson
Patented Case
View Patent ↗
Granted: Jul 30, 1996
Filed: Oct 24, 1994
Inventors
Anders Larsson
Rolf Castor
Stefan Brauer
Sven-Gunnar Olsson
Assignee (at issue)
Siemens Elema AB
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.